The logic did not handle desciptor arrays, or the descriptor overflow case.

Bug: b/123244275
Tests: *with_template*
Change-Id: Idf3f70848136865d1d76dc4f2f41b4c35d9230db
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/28388Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Presubmit-Ready: Ben Clayton <bclayton@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>